From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C1A2FA372C for ; Thu, 7 Nov 2019 01:46:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0037921848 for ; Thu, 7 Nov 2019 01:46:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="IeLMk0EJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732865AbfKGBq4 (ORCPT ); Wed, 6 Nov 2019 20:46:56 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:43294 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732777AbfKGBq4 (ORCPT ); Wed, 6 Nov 2019 20:46:56 -0500 Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xA71jMW7030488 for ; Wed, 6 Nov 2019 17:46:55 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=zk1kCImHpvuY6mO76Vwr4uMLDdfV3Tf1/DVrisRAj8w=; b=IeLMk0EJHlhHeez1zUvLWWtFC+zGwyliX5AQlwfvKoj5C0BdGU7IjUPM2h6RqAt6dhBp Kktb/B4A1Xy0Mn0aWdqXhantjL6bRz+lJHELGpO0HdPZxdvaRqrf/JQwD+jpjPKUzFUD nyhP6xYp1BkLy4Sq342TTnR++bnALgdqFf4= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2w41ue2f8n-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Wed, 06 Nov 2019 17:46:55 -0800 Received: from 2401:db00:2050:5102:face:0:37:0 (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::129) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Wed, 6 Nov 2019 17:46:42 -0800 Received: by devbig005.ftw2.facebook.com (Postfix, from userid 6611) id 9DD8529430DB; Wed, 6 Nov 2019 17:46:39 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Martin KaFai Lau Smtp-Origin-Hostname: devbig005.ftw2.facebook.com To: , CC: Alexei Starovoitov , Daniel Borkmann , David Miller , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH v3 bpf-next 0/3] bpf: Add array support to btf_struct_access Date: Wed, 6 Nov 2019 17:46:39 -0800 Message-ID: <20191107014639.384014-1-kafai@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-06_09:2019-11-06,2019-11-06 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 lowpriorityscore=0 clxscore=1015 malwarescore=0 mlxlogscore=871 suspectscore=8 adultscore=0 mlxscore=0 bulkscore=0 phishscore=0 priorityscore=1501 impostorscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911070017 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This series adds array support to btf_struct_access(). Please see individual patch for details. v3: - Fixed an interpreter issue that missed accounting for insn->off v2: - Fix a divide-by-zero when there is empty array in a struct (e.g. "__u8 __cloned_offset[0];" in skbuff) - Add 'static' to a global var in prog_tests/kfree_skb.c Martin KaFai Lau (3): bpf: Account for insn->off when doing bpf_probe_read_kernel bpf: Add array support to btf_struct_access bpf: Add cb access in kfree_skb test kernel/bpf/btf.c | 187 +++++++++++++++--- kernel/bpf/core.c | 2 +- .../selftests/bpf/prog_tests/kfree_skb.c | 54 +++-- tools/testing/selftests/bpf/progs/kfree_skb.c | 25 ++- 4 files changed, 221 insertions(+), 47 deletions(-) -- 2.17.1